Composition Of Certain Financial Statement Captions (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Sep. 25, 2015	Sep. 26, 2014
Composition Of Certain Financial Statement Captions [Abstract]
Accrual for Unpaid, Property, Plant and Equipment Additions	$ 21,900	$ 8,700
Accrued royalties	1,951	2,526
Amounts payable to joint licensing program partners	40,466	43,438
Accrued compensation and benefits	70,317	71,677
Accrued professional fees	6,523	6,162
Other accrued liabilities	50,050	34,573
Accrued liabilities	$ 169,307	$ 158,376